Whether you're a professional photographer, videographer, or enthusiast, Lexar professional 1667x SDXC UHS-II cards make it easy to quickly capture and transfer 1080P full-HD, 3D, and 4K video. The cards leverage UHS-II technology (UHS speed Class 3 (U3)) to deliver High-Speed performanceup to 250MB/s (1667x). this dramatically accelerates workflow from start to finish. For versatility, the cards also work with UHS-I devices at UHS-I speeds, and they're backwards compatible with older cameras and readers, performing at Class 10 speeds when used with non-UHS devices. Cards also come with a limited lifetime product support. Product Details Get high-speed performance with UHS-II technology (U3) for a read transfer Speed up to 250MB/s (1667x) Captures high-quality images and extended lengths of stunning 1080P full-HD, 3D, and 4K video with a DSLR camera, HD camcorder, or 3D camera Large capacity options up to 256GB let you enjoy shooting longer without changing cards High-speed file transfer from card to computer to dramatically accelerate workflow Backwards compatible with UHS-I devices and backed by limited lifetime product support